Mold-making machine.



C.. F. KNOWLTON & FIF. ELLIOT. Y

MOLD MAKING MACHINE.

APPLICATION FILED JUNE 2, 1910.

'Patented Feb.4,191.3.

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C. P. KNOWLTON & F. F. ELLIOT.

MOLD MAKING MAQHIMB.4

' APPLICATION FILED JUNE2,1910. l 1,051,897, Patented Feb.4, 1913.

Zava/#taza Janbeg O. F. KNOWLTON & P. F. ELLIOIT. MOLD MAKING MACHINE.APPLIGATION FILED JUNE 2,1910. 1,051,897; Patented Feb. 4, 1913.

5 SHBETSwBHEET 3.

` F. KNOWLTON L F..}`. ELLIOT.

MOLD MAKING MACHINE.

APPLICATION FILED JUNM, 1910.

1,051,897. Patented Feb.4,1913.

5 SHEETS-SHEET 4.

C. F. KNOWLTON 6L F. F. ELLOT. MOLD MAKING MACHINE.

APPLICATION FILED JUNE 2, 1910,

v 1,051,897, Patented Feb.4,'1913.

' 5 SHBETS-SHEET 5.

51 @c if .c2 sa '57 37 5'5" 575 .fz 97 #l Ulu I l. l f1 l WJ* 5f Z'Lfy'[fg/@QS V l MN 1\ UNITED STATES PATENT OFFICE.

CHARLES F. KNOWLTON AND FRANK F. ELLIOT, F PITTSBURGH, PENNSYLVANIA,ASSIGNORS TO THE OSBORN MANUFACTURING COMPANY, OF CLEVELAND, OHIO, A

CORPORATION OF OHIO.

MoLDMAx1NG MACHINE.

Specification of Letters Patent.

Patented Feb. 4,1913.

Application led .Tune 2, 1910. Serial No. 564,725.

` To all 'whom it may concern:

Be it known that we, CHARLES F. KxowL- rro1\v and F RANK F. ELL'io'r,citizens of the United States, and residents of Pittsburgh,

l county'lof Allegheny, Starte of Pennsylvania,

havaointly invented a' new and useful lmprovemnt in Mold-MakingMachines, of which thel following isA a specification, the principle ofthe invention being herein explained and the best mode in which we havecontemplated applying that principle, so as to distinguish it from otherinventions.

The general class of molding machines to which the presentA inventionpertains is theI so-called roll-Over type, which is characterized byhaving the frame that carries the pattern plate oscillatory about asubstantially central axis in place of an axis to one side, as in thefamiliar 'rock-crei' type of molding machine.

4The object of the present invention is the provision of such aroll-over molding ma- Our invention further comprehends various detailedimprovements whereby ease of operation may be secured in otherparticulars and perfect work rendered uniformly possible.

To the accomplishment of the foregoing and related ends, then, saidinvention consists in the means hereinafter fully described andparticularly pointed out in the.

claims.

The annexed drawings and the following description set forth in detailcertain mechanism embodying the invention, such disi closed meansconstituting, however, but one of various mechanical-forms in which theprinciple ofthe invention may be used.

In said annexed drawings F igure l is a plan view of a roll over moldmaking machine embodying our several improvements; Fig. 2 is a frontelevation of the same; Fig. 3 is a side elevation thereof viewed fromthe left in Figs. 1 and 2; Fig. 4 is a sectional view, taken on the line4 4 in Fig. 1, of the pivotal supportfor a swinging table that forms oneof the features of the machine; Fig. 5 is partly a front elevation andpartly a sectional view, taken on the .line 5 5 in Fig. 1, of the flaskcarrier and a portion of said table; Fig. 6 is a section, taken on theline 6 6 in Fig. 1, of a portion of said car-. rier taken at rightangles to the section of Fig. 5; Fig. 7 is a sectional detail, taken onthe line 7 7 in Fig. 1, of the pattern frame showing a flask clampingdevice that is attached thereto; Eig. 8 is another view of a portion ofsuch device; Fig. 9 is an enlarged front elevation of a. detail of thepattern frame; and Fig. 10 shows a 'detail of the flask-carrier.

The general frame of the machine comprises two standards 1 and 2, one ateither end, of A-shape and rigidly connected by a heavy transversemember 3 near their lower ends and by af distance rod 4 at a somewhathigherV elevation. The spacebetween such standards is thus leftsubstantially clear, as will be obvious upon reference to Figs. 1 and 2.Above the hollow interior space thus provided, is oscillatorilysupported the pattern frame 5 to which allusion has been previouslymade, while movable into and out of such space is a swinging table 6that is secured to end standard 1 of the machine frame so as to be`pivotal about a vertical axis. Such oscillatory pattern frame andswinging table, which latter constitutes a support for the flask uponthe separation, or parting, of the latter from the pattern, form the twomain operative elements of our machine. Their detailed description w'illnext be taken up in the order indicated.

The pattern frame which is of open construction and of generalrectangular form (see Fig. 1) is oscillatorily supported in the fashionpreviously described, by trunnions 7 at either end, for which suitablebearings 8 and 9 are provided on the respec tive end standards 1 and 2of the frame. The main portion of the pattern frame lies in a planeoff-set from the axis of oscillation defined by such trunnion bearings,so that, in other words, in the normal position of the frame. as shownin full lines in Fig. 2, the portion in question, which is-designed toreceive the pattern plate land the flask pending the filling ofthelatter with the sand, lies at a considerably lower level than the axisjust defined. Conversely, upon oscillation of said frame .into the molddelivery position wherein the fiask, in other words, is invertedpreparatory to its being separated from the flask carrier (such positionbeihg illustrated in dotted outline in said Fig. 2), this main body ofthe pattern frame'will lie vin a plane correspondingly elevated abovesuch axis. By thusoffsetting such frame body we are, accordingly,enabled to handle flasks of considerable depth without supporting thesame at an'eXcessive elevation, such as might render it inconvenient forthe Workman to place and tamp` the' sand therein.

Upon each ofthe longitudinally extending sides of the pattern frame, anarrow plate- 10 is adjustably secured, being attached to the atternframe by means of dove-tailed blocks 11 fitted into correspond-V inglyrecessed grooves in the upper faces of the frame sides, asshown in Fig.9.l Screws 13 assing through the plates and into such b ocksserve todraw the latterA and the plates together' so as to securely clamp thepattern plate (not shown) 'to thev frame. j l

To prevent the pattern frame from rolling over farther than its normalposition shown in Figs-1, 2 and 3, a bracket 14 is provided on the rearof each of the end standardsy of the main frame, in which bracket isadjustably mounted a set bolt 15,

`the head of which is disposed so as to be engaged by laterallyprojecting lugs 16 on said pattern frame. By properly positioning theset bolt, a lock nut 17 being provide .Lto retain the same in adjustedposition, the nor- `mal position of the pattern `frame may be 1n orderto secure the flask to the pattern 'frame suitable clamping meansrequire to be provided, such means preferably taking the form of thedevice illustrated in Figs. 7 and 8. This device consists simply of twolinks 24 adjustably mounted in lugs 25 provided substantially mid-Waybetween the end/s of5 therespect-ive side members of the pattern frameto receive the lower ends of said links".O In the outer ends of thelatter are pivotally mounted fiask clamping handles 2G provided .withhooked projections 27 eration.

that, in-t-he operative position of said handles are adapted to engage aclamping bai disposed transversely of the flask and thus securely retainthe latter in place on the frame pending the rolling over of said frame.

Adverting next to the swinging table 6 which supports the flask carrier,such table will be seen (Figs. 1, 2 and 5) to` comp/rise a hollow framewhich is. adapted to be normally supported entirely free of the mainframe of the machine by an integral arm 28 Vextending diagonally fromone corner of such hollow frame and pivoted, as previously deS-ribed, toend standard 1 of said main 'frame The details of the pivotal mountingof the arm are shown in Fig. 1. As there shown a vertically disposedshaft 29 is rotatably held in fixed vertical position by suitablebearings 30 and 31 in said end frame. This shaft is threaded through aportion of its length to receive an internally threaded sleeve 32 thatis vertically movable but held against rotation by means of a lug 33projecting laterallyy therefrom to engage `a guide-way 34therefor-*provided in t e adjacent portion of the standard proper. Saidsleeve 32 carries the weight of the arm 28 and table 6, although sucharm has additional lateral bearing at the upper portion of the shaft, asclearly shown in the figure in questi r. The extreme upper end 35 of thesli ft projects abovel the bearing 30 and is squared so as to receive asuitable wrench or the like, whereby it may be rotated tocorrespondingly raise or lower the internally threaded'sleeve 32 andthus raise or lower the swinging table supported therefrom. A set bolt36in the bearing serves to secure such shaft in desired adjusted position. A cover 66 of canvas or like flexible material incloses the lower"threaded p0rtion of shaft 29 which would otherwise be exposed.

The fiask carrier 37 proper, (see Figs. 1, 2 and 5) is mounted in thehollow swinging frame of the table 6 thus pivotally supperted from themain frame of the machine in adjusted vertical position, said carrierbe` ing, furthermore, vertically adjustable in the swinging taule frameto lowerthe flask away from the pattern in the parting op- Provision forthis latter` vertical adjustment, or reciprocatiun, is made by formingthe ends of the carrier with V- shaped guides 38 that are adapted tofitin corresponding guide ways 39 adjustably held in slots or grooves4() formed in the ends of the hollow frame. Set screws l11 with suitablelock nuts 42 serve to retain tlie'said guide ways in desired position,whereby anywear may be taken up,and consequent l`ooscness in themovement of the carrier avoided. In order to further steady the movementof the carrier the latter is also provided with a downwardly extendingcentral stem 64 fitted in a guide bearing 65 in vthe swinging frame.

Vertical reciprocation Iof'the carrier 37 thus to lower a flask, as alsoto restore such carrier to its normal raised position preliminary to thereception of a flask thereon, is accomplished by means of the mechanismshown in Figs. l and 2 and again in more detailin Figs. 5 and 6. Suchmechanism comprises an Aoperating shaft 43 journaled in a suitablebearing 44 in swinging table 6 and provided at its outer end wit-h acrank 45 or the like, and at its inner end with a disk 46. Such disk,which as shown is in effect merely a segment of a complete disk,

is provided with an eccentrically disposed.

pin 47 that forms, in effect, a wrist pin for reciprocating the flaskcarrier. This wrist pin is connected with the carrier by being provided-with a sliding block 48 that is slidably held in a horizontallydisposed slot 49 or way incorporated in the carrier structure, In theupper position of the carrier, such blockis designed to be thrownslightly over the center or axis of the disk and operating shaft, sothat the carrier will be securely retained in such position, movement ofthe disk being thus limited by an adjustable stop 50 secured in the slotwherein the block is slidably held.

From the foregoingdescribed construetion, it will be obvious thatrotation of the operating shaft 43 and so of disk 4G will serve to raiseand lower the carrier in the fashion and for the purpose previously de4scribed.

In order to support the mold in un changed position while it is beingfreed from the pattern, adjustable means are provided on thencarrier toreceive and support the tiask. These means, in the preferred formillustrated, comprise a series ot four vertically reciprocable pins orplungers 5l held in suitable pockets 5:2, one at each corner of therectangular skeleton top of the carrier. Beneath each plunger 51 isdisposed a compression spring 54 adapted to normally retain the same inelevated posi tion until it is brought into contact v". the bottom otthe rolled over flask.

In order to lock the pins n the more or less depressed position whichthey are thus forced to assume, two similarly curved, oppositclydisposed locking bars 55 of the general form clearly shown in Fig. l areprovided. lflach such bar, in other words, re sembles a flattened U, itsouter ends having a sufficient spread to respectively enter apcrtures 55in the sides of the pockets that receive the corresponding pair ot'reciprocable plungers, and beii :g slightly eoncaved to conform with thecross-section of the pins and be capable of having correspondinglylncrea'sed fractional contact therewith. The

.indicated in dotted outliire in Fig. l.

central portions of the locking bars extend inwardly substantially tothe center of the carrier top. Rotatably mounted, however,intermediately between such inner portions ot' the bars, is a lockingmember 57 having a pair of oppositely disposed similar cam faces (Fig.l0) which, upon rotation of' such member', respectively engage saidlocking bars to force the same outwardly and thus cause theirextremities to press against the pins. vided with an integral handle oroperating lever 58, the outer end of which lies clear of the top of thecarrier in convenient reach of the operator.

In order to retain the swinging table in its innermost position7 whereinthe flask carrier is located below the oscillatory pattern frame, asuitable latch is provided, Figs. 1 and 2, consisting of a vertical rod59 held between the arms of a bracket G0 extending inwardly from endstandard 2, and a catch 61 pivotally attached to the outer, or free, endof the swinging table and adapted in the,inner position of. the latterto engage said rod. A spring 62 normally thus urges said catch intoengagement with the rod and a handle 63 is provided on the catch for theconvenience of the operator in releasing the table when it is desired toswing the same outwardly.

Having thus described in detail the various structural featurescharacterizing our improved roll-over molding machine, the manner of itsoperation may be briefly set forth. It has already been explained thatthe pattern plate (not shown) is designed to be secured in the patternframe by means of the clamping plates 10, and the ask then placed overthe same and filled` all-while thc pattern frame is in the positionindicated in full lines in the several assembled views shown in thedrawings. After the fiask has been filled with sand and the bottom boardput in place and clamped down by means of the flask clamping devices,the frame, pattern flask, and all are rolled over, which serves at thetime to elevate the flask, by reaefn of the ott-setting of the framefrom its During such filling of the flask and rolling over of the same,the table (i. of course, is swung out of the way to the left as Upon thepattern frame being thus rolled over, however, the table is swung inunder the I same, the plane in which it thus swings having beenpreviously determined, by rotation of the threaded shaft Q9 about whichit is pivotal, so as to bring the depressible pins 51 on the flaskcarrier just a trifle higher, in the raised position of such carrier.than the bottom mold board on the flask in the inverted positio'n of thelatter. Said carrier, of course, is in its depressed position when thetable is thus swung in, but it will follow that upon elevation of thecarrier, the depressible pms in question will be brought into contactwith the bottom of the mold and l such stated depressed more or less,depending upon any unevenness in the way such mold hangs, or anyirregularities on its bottom. The table having been locked automaticallyas it is swung into the position just noted, by the engagement of catch61 with rod 59, the depressible pins are next likewise locked in theirdepressed positions, so that they may be capable of sustaining theentire weight of the flask, upon the latter being released from thepattern frame,which constitutes the'neXt step in the operation. Thecarrier is thereupon lowered so as to draw the flask and the molded sandtherein away from the pattern, which operation is technically calledparting, .the mold from the pattern. Upon the mold being freed from thepattern, the table may be swung again intoits outer position, andthemold taken thence; in the meantime the oscillatory pattern frame maybe rolled back into its normal position and another flask placed thereonand the making of another mold undertaken forthwith.

From the foregoing description of the operation of the machine it willbe apparent that various and important advantages are secured. Primeamong these is the removal of t-he flask carrier, with the mold,entirely away from the machine proper, as just described, just as soonas the parting step has been accomplished, so that the filling ofanother flask may be proceeded with even though delay is involved inremoving the previously filled flask from the carrier, as by having topatch or touch up the mold therein. Any such touching-up in roll-overmachines of the prevailing type, involves a corresponding interruptionof the molding operation, all of which obviated here. Furthermore, theoffsetting of the-pattern frame gives the advantage of an ampleclearance for the lowering away of the flask from the pattern in theparting operation, While still leaving the pattern at an elevation whereit is readily accessible to the workman filling the same. The variousdetailed structural features characterizing the swinging table and flaskcarrier insure the l accurate adjustment of such carrier to anyinequalities in the mold, as also a straight, smooth draw, allowing themold lo drop away wavering, such as is a prolific cause of 1njury to themold in all molding machines. Finally the machine in all its parts isreadily adjustable for various depths and sizes of flasks so as to beapable of use for a wide range of work. A

Other modesl of applying the principle our invention may be employedinstrnd the one explained, change being made as regards the 'mechanismherein disclosed,

from the pattern without any jar or i l l l l l l r to receiprocate saidcarrier, said mean, of

means stated by any one of the following claims or the equivalent ofmeans be employed.

We therefore particularly point out and distinctly claim as ourinvention l. In a machine of the class described, the combination of apattern frame oscillatory about a substantially horizontal axis; asupport movable below and transversely of said frame; means forvertically adjusting said support; and a flask carrier mounted in saidsupport so as to be vertically rcciprocable.

2. In a machine of the class described, the combination of a patternframe oscillatory about a substantially horizontal axis; a supportadapted to swing horizontally below said frame; means for verticallyadjusting said support; and a flask carrier mounted in said support soas to be vertically reciprocable.

3. In a machine of the class described, the combination of a patternframe oscillatory about a substantially horizontal axis; a verticallydisposed shaft; a. support pivoted on said shaft so as to swing belowsaid frame; and a flask carrier vertically reciprocable in said support.

4. In a machine of the class described, the combination of a patternframe oscillatory about a substantially horizontal axis; a verticallydisposed, rotatably supported shaft having a threaded portion; aninternally threaded sleeve mounted on said shaft but held againstrotation, so as to be raised or lowered by rotation of said shaft asupport pivoted on said sleeve so as to swing below said frame: and aflask carrier vertically reciprocable in` said support.

5. In a machine of the class described. the combination of a patternframe oscillatory about a substantially horizontal axis; a supportadapted to .swing horizontally below said frame; means adapted to securesaid support in such inner position: and a flask carrier verticallyreciprocable in said support.

(i. ln a machine ot' the class described, the combination of' a patternframe oscillatory about a substantially horizontal avi-1: a supportadapted to swing hcriz-zenlally below said frame; a springcatch adaptedautomatically to secure snif. upport in such inner portion; and a flaskcarrier vcrtcnlly reciprocable in said support.

7. ln a nrachine ot' the class described, the

provided the combination of a pattern frame oscillatory about asubstantially horizcutal axis; a support adapted to swing horizontallybelow said frame; a flask carrier vertically reciprocable in saidsupport; and means adapted lllw clnding an operating shaft mounted insaid support, and eccentric connerlima` between said shaft and carrier.

llt

8. In a machine of the class described, the combination of a patternframe oscillatory about a substantially horizontal axis; a supportadapted Vto swing horizontally belowv said trame: a flask carriervertically reciprocable in said support; and means adapted toreciprocate said carrier, said means including an operating shaftmounted in said support, a disk on the inner end of said shaft, a ivristpin on the face of said disk, and a slide vvay on said carrier disposedtransversely of said shatt and engagingl said pin.

9. In a machine of the class described, the combination ot" a patternframe oscillatory about a substantially horizontal axis; a supportadapted to swing horizont-ally below said frame; a flask carriervertically reciprocable in said support; and means adapted toreciprocate said carrier, said means including an operating shaftmounted in said support, a disk on the inner end of said shaft, a wristpin on the tace of said, disk, and a depending bracket on said carrierdisposed transversely of said shaft and provided with a slidewayengaging said pin.

10. In a machine of the class described, the combination of a patternframe oscillatory about a substantially horizontal axis 5 a supportadapted to swing horizontally below said frame; a flask carriervertically reciprocable in said support; and means adapted toreciprocate said carrier, said means including an operating shaftmounted in said support, a disk on the inner end of said shaft, a wristpin on the face of said disk, a depending bracket on said carrierdisposed transversely of said shaft and provided With a slidevvay, and aslide-block in said slideivay fitted on said pin.

11. In a machine of the class described, the combination of a patternframe oscillatory about a substantiallyY horizontal axis; a supportadapted to swing horizontally below said trame; a iask carriervertically reciprocablc in said support; and means adapted toreciprocate said carrier, said means including an operating shaftmounted in said support. a disk on the inner end ot said shaft.I a Wristpin on the itace of said disk, a depending bracket on said carrierdisposed transversely of said shaft and provided vvith a slidevvay` aslide-block in said slidevvay fitted in said pin, and an adjustable stopin said slideway to limit movement ot' said block.

1'2. In a machine of the class described, the combination of a frame; acarrierreciprocably held in said frame; and means for reciprocating saidcarrier, said means including an operating shatt mounted in said trameand provided at its inner end with a disk, a Wrist pin on the face ofsaid disk, a depending bracket on said carrier disposed transversely ofsaid shaft and provided with a slideway, a slide-block in said slidewaytitted in said pin. and an adjustable v stop in said slideway to limitmovement of said block.

13. In a machine of the class described, the combination of a patternframe oscilla? tory about a substantially horizontal axis; a supportadapted to swing horizontally below said frame; a flaskcarriervert-ically reciprocable in said support; and adjustable means onsaid carrier adapted to support a mold upon freeing the latter from apattern attached to said pattern frame.

1-1. In a machine of the class described, the combination of a patternframe oscillatory about a substantially horizontal axis; a supportadapted to svving horizontally belovvv said frame; a flask carriervertically reciprocable in said support; means on said carrier normallyadjustable to unevenness in a mold bottom; and means adapted to retainsaid first-named means against further adjustment.

1.5. In a machine of the class described, the combination of a patternframe oscillatory about a substantially horizontal axis; a. supportadapted to swing horizontally below said frame; a flask carriervertically reci rocable in said su port; and a plurality o independentlyadjustable members each adapted to support a mold at one of a series oflaterally spaced points, While freeingI said mold from a patternattached to said pattern frame. I'

16. Ina machine-of the class described, the combination of a patternframe oscillatory about a substantially horizontal axis; a supportadaptedto swing horizontally below said traine; a tiask carriervertically reciprocable in said support; laterally spaced members onsaid carrier normally movable relatively to each other and adapted tosupport a mold upon freeing the latter from a pattern attached to saidpattern frame; and means adapted to render said members relativelyimmovable.

1T. In a machine of the class described, the combination of a patternframe oscillatory about a substantially horizontal axis, said tramelwing offset from such axis; a vertically adjustable'support movablebelow and transversely ot said trame; and a tiask carrier verticallyreciprtiicable in said support.

18. In a machine of the class described, the combination ot a patternframe oscillatorv about a substantially horizontal axis,- said trarnebeing otisetfrom such axis; a vertically adjustable support adapted to`swing horizontally below said frame; and a tiask carrier verticallyreciprocable in said support.

19. In a machine of the class described, the combination of a patternframe oscillatory about a substantially horizontal axis;

frame in one direction to determine its normal position; a springpressed bolt adapted to lock said raine in either such no1-mal or 1 itsinverted position; and a flask carrier adapted to receive a mold fromsaid frame when in inverted position.

20. In a machine.r of the class described, the combination of a patternframe oscillatory about a substantially horizontal axis; adjustablemeans adapted to limit oscillameans adapted to limit oscillation of saidl tion of said frame in one osition; means adapted to lock said frame ineither normal or inverted position, and a flask carrier adapted toreceive a. mold from said frame 15 when in inverted position.

Signel'l bj: lis this :28th day of May, 1910.

Cil `XRLES F. KNOVLTON. FRANK F. ELLIOT. Attested luy-- C. l'l'. KNOX,L. 1l. MCCABE.

